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NVIDIA Corporation
Quadro FX 4500/5500 SDI User’s Guide – Version 2.0 81
C
HAPTER 5
API Control
• Cr = colorOffset[1] + colorScale[1] *
(R * colorMatrix[1][0] + G * colorMatrix[1][1] + B * colorMatrix[1][2]);
• Cb = colorOffset[2] + colorScale[2] *
(R * colorMatrix[2][0] + G * colorMatrix[2][1] + B * colorMatrix[2][2]);
Possible errors:
• BadMatch - The NVIDIA driver is not present on that screen.
• BadImplementation - GVO is not available on that screen.
XNVCTRLQueryGvoColorConversion()
Bool XNVCTRLQueryGvoColorConversion (
Display *dpy,
int screen,
float colorMatrix[3][3],
float colorOffset[3],
float colorScale[3]
);
This function retrieves the color conversion matrix and color offset that are currently
being used for GVO (Graphic to Video Out). The values are ordered within the arrays
according to the comments for XNVCTRLSetGvoColorConversion().
Possible errors:
• BadMatch - The NVIDIA driver is not present on that screen.
• BadImplementation - GVO is not available on that screen.